SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2021-31010

Apple iOS, macOS, watchOS Sandbox Bypass Vulnerability

KEVHIGH 7.5EPSS 3.67%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 September 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

A deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release..

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
3.67% probability · 89th percentile
CISA KEV
Listed 25 August 2022 · due 15 September 2022
Weakness
CWE-502
Affected
apple/ipados · apple/iphone os · apple/mac os x · apple/macos · apple/watchos
Source
product-security@apple.com

CISA notes

Apply updates per vendor instructions. https://support.apple.com/en-us/HT212804, https://support.apple.com/en-us/HT212805, https://support.apple.com/en-us/HT212806, https://support.apple.com/en-us/HT212807, https://support.apple.com/en-us/HT212824; https://nvd.nist.gov/vuln/detail/CVE-2021-31010

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.